[Gllug] Configuring SPF to cope with secondary incoming mail servers

[Karanbir Singh]

Jason Clifford wrote:
> You consider DNS lookups to be expensive? Perhaps that's an indication of 
> an underspecified platform.
> 

well, I am not sure what you mean by an underspecified platform - but 
doing a job better and faster at a lower cost is *always* something to 
work on. Perhaps, you have lots of lots more resources, I dont know - 
but this mail system is running off only 800mb/s links and has 80 TiB of 
storage behind the mail cluster.

And yes, we do consider open DNS to be expensive - it can add 
significant latency, which is one of the reasons why we download and run 
the rbl's and uribl's off local internal services.

-- 
Karanbir Singh : http://www.karan.org/ : 2522219 at icq
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